mckay



(No 515551. 2 SheetsSheet 1.

W. J. MoKAY. VALVE.

No. 554,455. Patented Feb. 11,1896.

Witses. WM Inventor \Z v By am-nay. L I/ 1 5 (No Model.)

Vlin esses,

2 Sheets-Sheet 2. J. MoKAY,

VALVE.

Patented Feb. 11, 1896.

Invemfor.

lINrTED STATES ATENT OFFICE.

IVILLIAM J. MCKAY, OF HAMILTON, CANADA.

VALVE.

SPECIFICATION forming part of Letters Patent No. 554,455, dated February11, 1896.

Application fil d June 3, 1895. Serial No. 551,468. (No model.)

T 0 all whont it may concern.-

Be it known that I, WILLIAM JOHN MCKAY, a subject of the Queen of GreatBritain, residing at Hamilton, in the Province of Ontario and Dominionof Canada, have invented certain new and useful Improvements in Valves,of which the following is a specification.

My invention relates to an improved elastic valve for water-closets, orfor any purpose where an elastic valve is required.

The object of the invention is to prevent pebbles, chips or dirt frominterfering with the proper action of the valve, and it will be fullyand clearly hereinafter described and claimed, reference being had tothe accompanying drawings, in which Figure 1 represents a side elevationof the valve, a portion of the valve-stem being connected to it. Fig. 2is a plan or top view of the same. Fig. 3 represents avertical centralsection on or about line a a, Fig. 2, showing also a section through aportion of the valveseat. Fig. 4 represents a side elevation of a valvehaving the upper enlarged portion re moved. Fig. 5 represents a verticalcentral section through an ordinary antifreezingvalve case, showing myimproved valve in engagement with the lower valve-seat, showing also bydotted lines the top of the valve or upper valve-face in contact withthe upper inverted valve-seat. Fig. 6 is also a vertical central sectionthrough a well-known valvecase, representing the elastic valve as beingpushed down through the val ve-seat opening.

Referring to the drawings in detail, 1 represents the valve. It ispreferably constructed of vulcanized india-rubber, but any suitableelastic material may be used. It is formed and designed to be used witha deep valve-seat, substantially as shown in the section at 2 in Fig.Heretofore an objection to this kind of valves has been that if apebble, chip or other little obstruction should get between the valveand valve-seat the valve would be lifted far enough from its seat tocause leakage. To obviate this difficulty I place a series ofcomparatively deep grooves 23, at and 5 around the valve, therebyleaving a plurality of valve faces or portions 6, 7 and 8, either one ofwhich will fit the valve-seat and make a tight joint, so that ifanobstruction gets in between the valve and valveseat-a pebble 9, forinstanceit may lodge between two of the valve-faces, as shown in Fig. 3,or it may be embedded in one of the valve-faces in the soft rubbercomposing the valve, while either one or all of the other valve-facesthat remain free will form a tight joint with the valve-seat. Thesevalve-faces or plurality of valve-faces are far more yielding than asolid-rubber valve would be, so that a small stone or other obstructiongetting between the valve and valve-seat is very easily forced into orbetween the yielding valvefaces and out of the way sufficiently to allowany one of the otherindependent valve-faces to seat and form awater-tight joint.

I have shown three of the separate independent valve-faces but thenumber may be more or less. I

At the top of the valve is another valve-face portion 10, adapted to fitanother valve-seat, which is formed in one integral piece with the valve1, thereby forming a double valve. The portion 10, being thinner thanthe valvebody 1 and extending outward all around it, can be forcedthrough an opening of smaller diameter than itself and immediatelyregain its shape when pulled or pushed through. The object of thisconstruction is to provide the means whereby one valve may be used tooperate on two valve-seats. In that case it is well known that when twovalves are used, one above the other, the upper portion 10 of the valve1 must be elastic enough to allow it to be forced up through the uppervalve-seat opening, after which (being of india-rubber) it immediatelyregains its normal shape and is then adapted to fit the uppervalve-seat.

The valve 1 is represented in Fig. 5 as resting on the lower valve-seat,2, and the dotted lines 10 show the upper valve-face portion in positionagainst the upper valve-seat, 11.

In Fig. 6 the valve is represented as being forced through the uppervalve-opening, after which it immediately assumes its normal shapesubstantially shown in Figs. 3 and 6.

When it becoins necessary to remove the valve for repairs or for otherpurposes, all

that is required is to remove the cap 12 and pull it up through thevalve-opening 13, the elastic portion 10 contracting and givingsufficiently to allow it to pass.

It is also important that the upper valve face portion 10 and body ofthe valve and its valve-faces should be made in one integral piece,because it is impossible to make it operate correctly otherwise. If itwere made separate and secured to the valve by a screwnut on thevalve-stem, (which passes entirely through both, as shown in Fig. 3,) itwould squeeze the central portion outward and thereby cause theperipheral edge to be bent downward and out of shape so that the valvecould not operate correctly. Consequently it is difficult to correctlyadjust a valve made in two pieces, and it is impossible to make it work

